baber/WOPTO huggingface dataset:
Patent GB-363719-A (GB)
Title: Improvements in and relating to protective devices for machine tools
IPC: B23Q11/08
Filed: 1930-09-23
Abstract: 363,719. Machinery guards. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and TURNER, J., Coventry Road, Pailton, near Rugby. Sept. 23, 1930, No. 28465. [Class 80 (iv).] Adjustable guards for machines having a metal-cutting tool supported in a frame over a horizontal table, such as milling-machines, comprise a trellis or other expanding shield 13, one end of which is vertically adjustable in a clamp 12 to clear the work 2, the clamp being horizontally adjustable and clampable on a bar 7 projecting from the frame-part 5, in order to clear the cutter 3. The other end is adjustably latched to the frame-part 6 by engaging one of a series of hooks 15 with one of the reduced parts of a pin 14. The guard, in addition to being collapsable, may also be hinged at 11 to swing open. To accommodate the largest cutters, a further joint may be provided to allow tilting. In a modification, the clamp 12 is supported by a bracket 91, Fig. 2, projecting from a perpendicular face of the frame-part 5 and having slotted bolt-holes 16 for horizontal adjustment. Guards may be provided both at the front and rear of the tool, as shown in Fig. 2.
Patent GB-957049-A (GB)
Title: Magnetic core memory
IPC: G11C11/06
Filed: 1960-08-17
Abstract: 957,049. Circuits employing bi-stable magnetic elements. SPERRY RAND CORPORATION. Aug. 17, 1960 [Aug. 17, 1959], No. 28566/60. Heading H3B. To avoid pulse reflection in a selecting line linked with a number of magnetic storage cores, a resistor is connected in parallel with the line and is inductively coupled to the line. The resistor may be connected in series with a condenser so that only transient currents are affected. Alternatively, the selecting line may be inductively coupled to a resistive circuit. Condensers, Zener diodes or varistors may be included in the resistive circuit. In the matrix shown in Fig. 1, potential - E1 is more positive than - E2 and diode 19 normally conducts to clamp terminal 21 to - E1. A negative pulse at the base of transistor 14 drives a pulse through selection line 11 the amplitude being limited by resistor 15 and inductor 17. A resistor 16 equivalent to the characteristic impedance of the line, is connected across the two terminals of the line 11 to absorb the reflected pulse. The line may be driven by a pentode instead of a transistor. In Fig. 2, the resistor 28 is connected in series with a condenser 26 so that the resistor is effective only during transients. In Fig. 3, the transformer primary winding 33 is connected in the line 32 and resistor 38 is connected across the secondary. In Fig. 4, line 42 is linked with magnetic memory cores 40 one with elements 46 having high eddy current losses. In Fig. 6 a resistor 68 is used in series with two Zener diodes 66, 67. The resistive circuit conducts in either direction when the signal exceeds the critical reverse voltage.
Patent GB-1423340-A (GB)
Title: Solenoid valve mechanism particularly for antilock vehicle  brake systems
IPC: F15B21/08
Filed: 1972-06-19
Abstract: 1423340 Valves; antiskid braking systems MULLARD Ltd 11 May 1973 [19 June 1972] 28586/72 Headings F2V and F2F An antiskid vehicle braking system includes a solenoid valve mechanism 1 having means to prevent displacement of the solenoid armature 14 for antiskid operation should there be a large fluid leakage past valve member 16 and through orifice 31. Valve member 16 is normally biased to the closed position by a spring 37 and is surrounded with axial and radial clearance by armature 14 carrying an 0-ring 29 which in the unenergized state seals a region 30<SP>1</SP> bounding orifice 31 under the action of biasing spring 15 bearing on slidable member 33. The clearance around valve member 16 permits the pressures upstream of the latter and within region 30<SP>1</SP> to equalize providing the valve member is fully closing orifice 31. If however there is substantial leakage through orifice 31, e.g. owing to trapped dirt, then the pressure differential across valve member 16 is too great to permit armature 14 to cause further opening of the latter when windings 13 are energized by an antiskid signal. Consequently the fluid pressure at brake 10 is not relieved. During normal operation an antiskid signal causes armature 14 to move leftwards into abutment with valve member 16, opening the latter and causing braking pressure to be relieved through orifice 31 to line 17. The thus-displaced fluid flows from line 17 into a reservoir 19 causing spring- loaded piston 20 to move leftwards so that stem 21 enters pressure line 12 to reduce the flow to brake 10 from master cylinder 2. When valve member 16 is open the flow through mechanism 1 is from inlet port 40, through axial and radial passages 41, 42 in armature 14 and thence through ports 39 in slidable member 33 to orifice 31. The flow through ports 39 produces a pressure differential urging member 33 and armature 14 rightwards until an equilibrium position is reached. Spring 15 is weak compared with spring 37. In modifications (Figs. 2, 3, not shown) the positions of springs 15, 37 and of members 33 are altered. The braking system also includes a fail-safe arrangement 5, wheel movement sensor 6, electronic control circuit 7 and scavenging pump 9.
Patent GB-209393-A (GB)
Title: Improvements in gas masks and the like
IPC: A62B18/08
Filed: 1923-11-14
Abstract: 209,393. Mine Safety Appliances Co., (Assignees of Logan, F. A.). Jan. 8, 1923. [Convention date]. Respirators.-An eye-piece for gas-masks comprises an outer retaining ring 5 having an inturned edge between which and an inner ring 2 the fabric 1 is gripped. The rings 5, 2 are beaded as at 7, 3 respectively. The parts having been placed in position, as shown in Fig. 1, the ring 2 is bent to grip the fabric, as shown in Fig. 3. The lens 11 and lens-holder 12 are then inserted, and are secured by turning the flange 14 of the retaining ring down upon the flange of the lens-holder. The lens is preferably supported by a rubber washer 13.
Patent GB-635063-A (GB)
Title: Improvements in electric traction equipments
IPC: B60L50/30
Filed: 1946-09-26
Abstract: 635,063. Exciting dynamo-electric machines. PESTARINI, G. M. Sept. 26, 1946, No. 28750. [Class 35] [Also in Group XXXVII] In a traction system operating from a separate supply, two separate flywheel machines running in opposite directions serve at low loads to accelerate and store energy in the flywheels and as generators transforming the stored energy into electrical energy to help supply the traction motors when they are heavily loaded, the speed of the two flywheel machines being maintained in predetermined relation to reduce the gyroscopic effect of the flywheels when the vehicle traverses a curve. The connections and exciting arrangements of the first flywheel machine MT are generally as in Specification 635,062, but a second flywheel machine MMT is connected across the primary brushes a, c of MT so as to divide the energy fed to the motors M1, M2 in proportions depending on the relative excitations of the controlling windings of the two machines, i.e. separately excited winding 100 for machine MMT and a separately excited winding on each of two exciters (not shown) feeding windings W1, W2 on machine MT, the desired proportions being achieved by having a common handle for adjusting the rheostat in the circuit of each of the three controlling windings. Machine MMT also has shunt winding 104 and/or a separately excited winding 105. Specifications 635,059, 635,061 and 635,062, [Group XXXVII], are referred to.
Patent GB-989096-A (GB)
Title: Improved electric switch
Inventor: GREAVES EDWIN
IPC: H01H23/16
Filed: 1960-08-19
Abstract: 989,096. Snap-action switches; retractive switches. DOWTY ELECTRICS Ltd. Aug. 21, 1961 [Aug. 19, 1961], No. 28751/60. Heading H2B. In a snap-action switch of the type wherein a spring is strained until a spring-loaded detent is overcome and a member then snaps into a contact-closing position, the spring which loads the detent also provides a contactengaging force. The switch body comprises two parts, 1 and 2, held together by a metal sleeve 3 having a peened-over portion 4 at one end and a plurality of tags 5 at the other. A threaded mounting turret 7 carries a pivoted dolly 18 the inner end of which engages an actuating member 23 sliding on two bars 21 and 22 each of which carries a contact-operating member 28 normally centralized in the member 23 by springs 26, 27. Each member 28 has a ball detent 43 telescopically mounted on an arm 39 pivoted by a ball-and-socket joint 35, 36 in a terminal 37, and a spring 44 urges the ball 43 into a locating recess 55 on its associated rod 21 or 22. The spring 44 also urges a bridging contact 45 against the shoulder 34 of the ball part 35. When the dolly 18 moves member 23 upwards (Fig. 1) each spring 27 is compressed against its associated member 28 until the restraint of its detent 43 is overcome, whereupon members 28 snap upwards until detents 43 are located in recesses 56. The upper arm of each contact 45 engages a respective fixed contact 49 and is partially lifted off its shoulder 34 against the action of its spring 44 (Fig. 4, not shown). This produces a wiping action over contacts 49. A similar action occurs with contacts 51 when the dolly 18 is moved in the other direction from the central position, but in this case extra springs 58, 59, and 61 may be provided to act on member 23 and are stronger than the detent restraint such that the switch retracts as soon as pressure is removed from dolly 18. Spring- loaded balls 67 engage notches in the body (Fig. 3, not shown) to locate the dolly 18 in its central position. A rubber sleeve 19 provides a moisture seal to the switch, and a pad 11 ensures a fluidtight seal at the mounting on a panel (not shown). To improve electrical connection between terminals 37 and bridging contacts 45 two spring blades 71 are provided on each terminal 37 to grip the sides of the base of the associated contact 45. In the Provisional Specification the moving contact slides linearly instead of pivoting and the contact surfaces are curved such that arcing does not multilate parts involved in the fully engaged condition.
Patent GB-163956-A (GB)
Title: Improvements in and relating to smokers' ash trays
IPC: A24F19/00
Filed: 1920-10-11
Abstract: 163,956. Willingham, J. W. Oct. 11, 1920. Ash-trays.-A converging space 17 is provided between an upper tray 15 and a lower ash-tray 12 for the purpose of extinguishing cigarettes. In the form shown in Fig. 2, a screw 19 passes through a match-holder 20, sleeve 18, tray 15, washer 13 and ash-tray 12.
Patent GB-408029-A (GB)
Title: Improvements in or relating to appliances for cutting cheese
IPC: B26D1/547
Filed: 1932-10-15
Abstract: 408,029. Cheese cutters. KELLY, P., 83B, Broad Street, Reading, Berkshire. Oct. 15, 1932, No. 28838. [Class 87 (ii).] An appliance for cutting cheese comprises a table having a slot extending from the front to the back edge, and external means at and below the back end of the slot for securing one end of a cutting wire, the other end of which is free and provided with a handle, the wire being drawn downwards through the cheese into the slot. The table comprises a rectangular wooden frame 1 on which two slabs 2 of marble are fixed leaving a slot 3 between them. A crosshandle 5 of the cutting wire 6 is retained in a slot 4 in the frame 1 by metal buttons 8. The frame at the other end of the slot 3 is covered by a small metal plate to protect it from the wire. Screw clamps may be provided at the front to fix the appliance to a counter and a drawer may be provided in the frame at one end to hold spare cutting wires. A space is provided under the slabs 2 into which cheese crumbs fall through the slot 3. The handles for the cutting wire may be of the known form having a nipple on the wire inserted in a slot in the handle or may comprise two parts connected by a screw over which a loop on the wire is slipped.
Patent GB-916453-A (GB)
Title: Stopping agents for emulsion polymerization processes
IPC: C08F2/22
Filed: 1961-08-10
Abstract: A short-stopping agent comprises an N,N-dialkylhydroxylamine The stoppers are preferably used to stop polymerization reactions involving conjugated diene rubbers but may also be used in the polymerization of vinyl and vinylidene halides, methyl acrylate, glycidyl methacrylate, methacrylamide and vinyl acetate. Specified dienes are butadiene, isoprene, chloroprene, cyanobutadiene, 2-phenylbutadiene, piperylene, 2-3 dimethyl butadiene and comonomers specified are styrene, vinyl naphthalene, alphamethylstyrene, p-chlorostyrene, acrylic acid, methacrylic acid, acrylonitrile, and methacrylamide.  Specified hydroxylamines are N,N-dimethyl -diethyl, -di-n-propyl, -di-iso-propyl, -di-n-butyl, -diamyl, -dicyclohexyl, -di-decyl, -di-octadecyl hydroxylamines, N-methyl-N-ethyl and N-methyl-N-cyclohexyl hydroxylamines.
Patent GB-1401841-A (GB)
Title: Hydroxytoluic acid derivatives processes for their preparation  and pharmaceutical  preparations containing them
IPC: C07D333/38
Filed: 1972-06-21
Abstract: 1401841 Pharmaceutical compositions PIERRE FABRE SA 21 June 1972 [21 June 1971 5 June 1972] 29017/72 Heading A5B [Also in Division C2] Pharmaceutical compositions having central nervous system depressant activity comprise, as active ingredient a hydroxytoluic acid derivative of the general formula wherein R is a hydrogen atom or C 1-5  alkyl, alkenyl, alkynyl or acyl group, R<SP>1</SP> is a hydroxy, alkoxy, alkenyloxy, alknyloxy amino (optionally substituted by one or two alkyl groups or by a phenyl or cycloalkyl group), -O-ANR 1 R 2  or -NR"-A-NR 1 R 2  group (in which each of R 1  and R 2  is an alkyl group or NR 1 R 2  is a piperidino, pyrrolidino, morpholino or piperazino group, A is a C 2-5  linear or branched hydrocarbon chain and R" is a hydrogen or C 1-5  alkyl group), X is a hydrogen or halogen atom or a nitro group and n is 1 or 2, with the proviso that when each of R and X is a hydrogen atom, R<SP>1</SP> is not a hydroxy or amino group, in admixture or conjunction with a pharmaceutically suitable carrier, and may be administered orally, rectally, parenterally or locally, e.g. as tablets, suppositories, or injectable ampoules. The may contain additionally other active ingredients, such as asprin and promethazine.
Patent GB-805894-A (GB)
Title: Improvements in and relating to thermally compensated magnetic apparatus
IPC: G01P3/495
Filed: 1955-10-12
Abstract: 805,894. Moving-coil measuring instruments. ETABLISSEMENTS E. JAEGER. Oct. 12, 1955 [Oct. 27, 1954], No. 29097/55. Drawings to Specification. Class 37. [Also in Group XIX] In magnetic apparatus, e.g. eddy current speedometers or moving-coil electrical measuring apparatus wherein a movable assembly rotates under the influence ofarotary permanent magnet against the restoring torque of a spiral spring, the metal of the spiral spring is of a temperature-coefficient of elasticity equal to the temperature coefficient of resistivity of the active member of the movable assembly. It is stated that measurements independent of temperature are thereby obtained. The active member of the movable assembly may be plated, e.g. with copper up to or above the thickness required for numerical equivalence of the coefficients stated above, any excess being mechanically removed until each equivalence is obtained. The spiral spring may be of phosphor-bronze or beryllium bronze with a temperature coefficient of elasticity between 3 Î 10-4 and 4 Î 10-4 and the active member of the movable assembly of a copper-nickel alloy with 15.07 per cent nickel or of a coppermanganese alloy with 3.09 per cent manganese.
Patent GB-1359146-A (GB)
Title: Locking arrangement for a shaft or lead-screw the combination of  a rotatable drive leement with a locking means therefor
IPC: F16H37/00
Filed: 1971-06-15
Abstract: 1359146 Positive detents ALFRED HERBERT Ltd 15 June 1971 [16 June 1970] 29108/70 Heading F2E A rotatable drive element 10 has teeth which are engaged by a positive detent 13, 14 which is retracted by two devices, the first of which is operated by the application of a manual drive element 26, and the second of which operates when power drive is applied to the element 10, the second drive also causing the manual drive element to disengage. When the manual drive element 26 is applied it causes a lever 18, with a bifurcated end surrounding a square section part 25 of the element 10, to move anti-clockwise and, through abutting face 21, to retract the detent 13. When power drive is applied to the element 10, fluid causes a piston to move rightwardly in a cylinder, and therefore to retract the detent 13, which is fixed to or integral with the piston. This movement of the detent 13, through abutting surfaces 23, 24, causes the lever 18 to move clockwise to push the manual drive element 26 upwardly, disengaging the element 26.
Patent GB-334729-A (GB)
Title: Improvements in or relating to the knife sharpening apparatus of belt-knife leather splitting machines
IPC: B24B3/56
Filed: 1929-09-26
Abstract: 334,729. Murphy, G. L. Sept. 26, 1929. Machine cutters, grinding in situ; spindles s and spindle mountings. A grinding-wheel spindle 2 of a sharpening attachment to a leather splitting machine of the band knife type is mounted in antifriction and dust proof bearings. Carrier rods 11, which may be adjusted axially and are held from rotating, have enlarged portions 12 carrying rings 20 with internal conical surfaces which together with rings 22 on a reduced portion of the spindle form bearing surfaces for rollers 14 loosely held by retaining rings 23. A cover 15, sleeve 24 and felt &c. pad 19 serve to exclude dust. A modification is shown in Fig. 2. Balls may replace the rollers. Wheels.-The grinding-wheel 1 is mounted on an enlarged portion 5 of the spindle between clamping plates 6, 7 and held by a flange 4, a wooden &c. packing disc 8 and a screwed nut 9.
Patent GB-450232-A (GB)
Title: A method of raising the fireproof qualities and maintaining the stretch of the wing and control surface fabric on aircraft
IPC: D06M13/292
Filed: 1934-10-11
Abstract: A varnish for wing &c. fabrics of aircraft comprises a basis of chlorinated rubber. phosphoric esters and pigments, e.g. zinc oxide and iron oxide may be added.  An example comprises 200 g. chlorinated rubber, 30 g. tricresyl phosphate, 20 g. tributyl phosphate, 300 g. toluene and 300 g. xylene.  100 g. iron oxide may be added.
Patent GB-333432-A (GB)
Title: Improvements in or relating to braces for suspending garments
IPC: A41F3/02
Filed: 1929-09-26
Abstract: 333,432. Kloss, J. Sept. 26, 1929. Braces. - Trouser-suspending braces are provided with a fitting e of the form shown in Fig. 3 to embrace the end of the shoulder strap and to carry the usual connecting link d to which the tab end carrier g is attached The fitting e which is V-shaped in section and is provided with teeth f to engage the end a of the shoulder strap a. The shoulder strap passes, as shown in Fig. 2, from its fitting e, up through an adjusting slide c, returning downwardly to pass through a slot in the link d, which it passes upwardly to the adjusting slide.
Patent GB-627511-A (GB)
Title: An improved fusible plug for use with steam generating boilers
IPC: F22B37/47
Filed: 1946-10-01
Abstract: 627,511. Fusible plugs for steam boilers. ZAN, T. Oct. 1, 1946, No. 29245. [Class 123(ii)] A fusible plug 7 is secured within the grooved lower end of a tube 5 around which is disposed a sleeve 1 forming an annular space 10, the tube and sleeve being in screw - threaded engagement with cne another and with the crown plate &c. 4 of a boiler firebox from which they project upwardly. The tube 5 is provided with a series of slots or holes 8 immediately above the plug 7 so as normally to permit circulation of water therethrough from the space 10 in the direction of the arrows, and the upper end of said tube is flanged at 11 to prevent entrance or return of water to the space 10 when the level in the boiler falls below the top of the sleeve 1. The device may be fitted either from the water or the fire side of the plate 4, a shoulder 3 on the sleeve 1 being disposed above or below the screw-threaded end of the latter accordingly.
Patent GB-1386564-A (GB)
Title: Series motor circuit control system
IPC: H02P7/28
Filed: 1973-06-21
Abstract: 1386564 Braking D.C. motors BROWN BOVERI & CIE AG 21 June 1973 [21 June 1972 12 May 1973] 29463/73 Heading H2J A system for controlling a D.C. series motor for traction and regenerative braking operation is adapted to maintain the polarity of the motor field coil. In a first embodiment Fig. 1, the field coil F is connected at a first end 5 to the positive terminal of a D.C. source 1 via a controllable diode S 1  and to the negative terminal via a free-wheeling diode D2. The other end 6 of the coil F is connected to the negative terminal of the source 1 via a controllable diode S 2  and to the positive terminal via a free-wheeling diode D 2 . When the motor 8 is operated for traction, the diode S 1  is caused to conduct and motor current flows through the coil F, a centre tapping A, a smoothing inductor L, the armature of the motor and back to the battery at 2. For a regenerative braking operation the diode S 2  is ignited after the extinguishing of diode S 1  and the motor operates as a generator, the current through the armature thereof being reversed but the polarity of the field coil F is maintained since current flows from tapping point A to point 6. In a second embodiment, Fig. 2, the ends of the coil F are connected with the source 1 through a similar system of gated and ordinary diodes and the system is provided with a commutating circuit comprising capacitor C and two commutating triggered diodes T 3 , T 4 . To operate the motor, the main diode T 1  is ignited and current flows through the field coil F via point 5 and diode D 3 . In a regenerative braking operation, the diode T 1  is extinguished and the diode T 2  ignited and current is reversed in the motor armature but flows from diode D 4  to terminal 6 of coil F, i.e. in the same sense as before through the coil. Diode S 2  in Fig. 1 or T 2  in Fig. 2 may be extinguished to pass energy back to the battery.
Patent GB-1344556-A (GB)
Title: Door latch operating mechanisms
IPC: E05B85/12
Filed: 1972-06-23
Abstract: 1344556 Latches ITW-ATECO GmbH 23 June 1972 [24 June 1971] 29587/72 Heading E2A A vehicle door latch handle 6 is pivoted at 4 and has a lug 8 bored at 12 to receive the right-angled portion 14 of an operating rod 10, an abutment 18 preventing detachment of the rod. The handle lever may be of plastics.
Patent GB-182732-A (GB)
Title: Improvements in means for consuming smoke in locomotive boiler furnaces
IPC: F23L7/00
Filed: 1921-11-07
Abstract: 182,732. Brown, G. D. Nov. 7, 1921. Blast apparatus and araught-inducers; steam, supplying; doors.-To consume smoke in a locomotive boiler furnace, air and steam are supplied separately to the fire-box. As shown, a current of air is induced by the motion of the locomotive in pipes 17 which have funnel-shaped mouths 20 and extend longitudinally through an insulating cover 18 surrounding the boiler to a pipe 15, arranged round the fire-door opening and having nozzles 16 which deliver into a small space left between the door 9 and the flange 11. Steam is supplied above the fire through downwardlydirected tubes 24 which pass through the firebox wall to a chamber 21, provided with a cover 23 and connected to the steam-dome 10 by a valve-controlled pipe 26. To create a draught when the engine is stationary, steam is supplied from the dome 10 through a pipe 29 to a nozzle 30 located immediately above the usual blastnozzle 8 in the smoke-box. The fire-door 9, shown in plan in Fig. 3, is formed of two hollow parts 12, 13, each having perforated inner and outer walls and being provided with an internal baffle-plate 34.